We are in the process of adding D-BUS support to the powersave daemon, which will replace the current socket communication and make it easier to write other frontends or to integrate into your favorite power management tool. It will be possible to get information from powersaved and to invoke actions (e.g. set cpufreq policy or trigger a suspend).
Unfortunately, this also means that the code is highly unstable at the moment and may or may not build at all. I hope we can fix this soon. If you run into a particular problem, feel free to flame us on the powersave-devel list (or bug us to fix it fast ;-)